When powering the DQ45CB board up it switches on for about 10 seconds, then switches off for about 10 seconds, and on and off continously. I have tried replacing the RAM, removing the video card and using onboard, replacing the PSU and disconnecting all add on adapters such as USB ports, even disconnecting the hard drives. The only way to get the board to boot is to short the BIOS Configuration jumper to RECOVERY, turn on wait a couple of seconds turn off (with the casing switch not from power source) short the jumper back to NORMAL (1-2) and the it works. Shutting down the system I have to do this every time to get the board to normal boot.

I have done no updates...no BIOS flash, no upgrades and have not replaced any hardware or upgraded any hardware...it just went spaz on me all of a sudden.

You may need to provide more deatils about the hardware installed on the system such as the model number of the processor installed, part number and manufacturer of the memory installed and the wattage of the power supply installed, also deatils on the other hardware installed.

Try to test the system out of the chassis, placed on a non-conductive surface like a newspaper, a magazine or something similar to make sure that this is not a grounding issue, update the system BIOS and if possible test with tested memory. If the issue continues a motherboard replacement may be required

I have the same exact problem and have tried to resolve it with the all of the same methods including bench testing the MB on a wooden bench. In addition I have take all the components that I have swapped out, memory, processor, ps, etc., and built them into to systems which are presently up and running with no problems, errors or issues.

I was experiencing this same issue and DOA'd 2 boards before I realized it was a case of this particular mobo being VERY touchy about certain rails' voltage levels coming from the PSU.

I managed to work around it by loading the PSU (with hard drives). With 4 drives in the box it boots fine every time and hasn't skipped a beat. As soon as I reduce the load to the motherboard itself, it fails.

I suspect cheap parts in the power circuits (huge liquid caps? who uses those any more?)